Machine for treating rubber and other heavy plastic material.



r. H. amunv. MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIAL.

APPLICA'HON FI'LED APR. 20. "H

1,235,757. PatntedAu. 7,1917.

UNITED STATES PATENT OFFICE.

FERNLEY H. BANBURY, OF ANSONIA, CONNECTICUT, ASSIGNOR TO BIRMINGHAM IRON FOUNDRY, OF DERBY, CONNECTICUT, A CORPORATION.

MACHINE FOR TREATING RUBBER AND OTHER HEAVY PLASTIC MATERIAL.

Specification ofLetters Patent.

Patented Aug. '7, 1917.

Application filed April 20, 1917. Serial No. 163,420.

To all whom it may concern:

Be it known that I, FERNLEY H. BANBURY,

.a subject of the King of Great Britain, re-

thereon, to be a full, clear, and exact tie-- scription of the same, and which said drawings constitute part of this application, and represent, in-

Figure 1 a view in end elevation of a machine for treating .rubber and other heavy plastic. material constructed in accordance with my invention.

Fig. 2 a broken transverse sectional view ofthe same.

Fig. 3 a broken View in longitudinal section through one of the chambers, illustrating a sliding door for closing the opening in the bottom thereof.

This invention relates to an improvement ,in machines for treating rubber and other heavy plastic material, and particularly to machines for this purpose in which the easing is of a duplex character, that is, having two communicating chambers in each of which a rotor is mounted, such, for instance, as shown in United States Patent No. 1,200,071,dated October 3, 1916.

To provide for the delivery of ,material from the cylinders after it has been sufficiently treated, a single. door has been arranged to swing away from a centrally ar ranged opening in the center of the casing.

'The object of this invention is to provide a slot in each section of the casing so that the material instead of bcing discharged in a large mass, will be delivered in rough slicelike picccs; and-the invention consists in the construction hereinafter described and particularly recited in the claims.

In carrying out my invention, I employ a casing-4 comprising two cI \/limlrical chambers 5 and i. as in the patcnt above-refcrrcd to, and moinilcd to rotate in the chambers are bladcs and S as inthc patcnt above mcntiqmcd. In each chamber I form one or morc slots El which are-adapl'wl to be closed by slidcs 10 which rest upon horizontally arrangcd supports 11 and 12, the slides being. constructed and arranged to close the slots 9 1n the chambers. These slides me be operated 1n any desired manner. Pre

erably and as herein shown, they will each.

be connected with a piston rod 13 connected to a piston-head 14 in the cylinder 15 to which cylinders steam, water or air may be admitted or discharged to move the piston heads back and forth as desired. By using slides, the operation of moving them is simplified, and by providing a slide in each section or chamber of, the casing the material being treated will be discharged or pushed out by the rotation of the blades in slabs or slabdike pieces rather than in a lum as will be the case with a single, central y arranged opening, unless that centrally arranged opening be made so small as to be impracticable for general use because it would require so much time to discharge the load.

1. In a machine of the class described for treating rubber and other heiwy plastic'mw terial, the combination with a double cylindrical casing formed with a slot in each cylinder, of slides adapted to close said openings.

2. A machine for treating .rubber and other heavy )lastic material comprising two cylindrical dhambers, each formed with a slot, and a slide adapted to close the said slots.

3.In a machine for treating rubber and other heavy plastic material, the combina tion with a casing having two chambers, each formedwith adischarge slot, of slides adapted to close the said slots, and horizontally arranged supports on which said slides may be moved.

4. A machine for other heavy plastic material comprising a casing having two cylindrical chambers each formed with a slot, slides adapted to close said. slots, and means including a piston, a cylinder for moving said slides back and forth. V i

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

' F. If. BANBURY.

Witnesses;

F. Emma, M. P. NrcnoLs.

treating rubber and. 

